feat: surface cross-user messages prominently on sync

sync.sh: after pull, scan changed session logs for "## Note for" /
"## Message for" sections and print them in a highlighted block
before the sync summary. Forces attention on inter-team messages.

CLAUDE.md: document mandatory behavior — cross-user notes displayed
at top of response with full content, action items addressed before
continuing.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.claude/CLAUDE.md

@@ -164,6 +164,23 @@ Never ask "What did we do last time?" or "What's the server IP?" — read the CO
 - **Sequential Thinking:** Use for genuine complexity — rejection loops, 3+ critical issues, architectural decisions
 - **Task Management:** Complex work (>3 steps) → TaskCreate. Persist to `.claude/active-tasks.json`.
 
+### Cross-User Messages (MANDATORY)
+
+After every `/sync` — and whenever reading any session log from another user — scan for sections named `## Note for <user>` or `## Message for <user>`. If found:
+
+1. Display the full note content **prominently at the top of the response**, before sync status or anything else, formatted as:
+   ```
+   ============================================================
+   MESSAGE FROM <AUTHOR> (<date>)
+   ============================================================
+   <full note content>
+   ============================================================
+   ```
+2. Explicitly address each action item or question in the note before moving on.
+3. Do not bury these in the sync summary or skip them because other work is in progress.
+
+This applies to ALL session logs pulled during sync, not just the most recent one.
+
 ---
 
 ## Context Recovery

.claude/scripts/sync.sh

@@ -156,12 +156,54 @@ else
     echo -e "${GREEN}[OK]${NC} Nothing to push."
 fi
 
-# Phase 5: Summary
+# Phase 5: Scan pulled session logs for cross-user messages
+# Look for "## Note for" or "## Message for" sections in any session log
+# touched by incoming commits. Print them prominently so they aren't missed.
+if [ "$INCOMING_COUNT" -gt 0 ] && [ -n "$LOCAL_BEFORE" ]; then
+    CHANGED_LOGS=$(git diff --name-only "$LOCAL_BEFORE"..HEAD -- '**/session-logs/*.md' 'session-logs/*.md' 2>/dev/null || true)
+    if [ -n "$CHANGED_LOGS" ]; then
+        NOTES_FOUND=0
+        for LOG_FILE in $CHANGED_LOGS; do
+            if [ -f "$LOG_FILE" ]; then
+                # Extract author from "## User" block and any "## Note for" / "## Message for" sections
+                NOTE_CONTENT=$(awk '
+                    /^## (Note|Message) for /{ in_note=1; header=$0; next }
+                    in_note && /^## /{ in_note=0 }
+                    in_note{ buf=buf"\n"$0 }
+                    END{ if(buf) print header buf }
+                ' "$LOG_FILE")
+                if [ -n "$NOTE_CONTENT" ]; then
+                    if [ "$NOTES_FOUND" -eq 0 ]; then
+                        echo ""
+                        echo -e "${YELLOW}============================================================${NC}"
+                        echo -e "${YELLOW}  MESSAGES FROM OTHER TEAM MEMBERS${NC}"
+                        echo -e "${YELLOW}============================================================${NC}"
+                        NOTES_FOUND=1
+                    fi
+                    LOG_AUTHOR=$(awk '/^- \*\*User:\*\*/{print; exit}' "$LOG_FILE" | sed 's/.*\*\*User:\*\* //')
+                    LOG_DATE=$(basename "$LOG_FILE" | grep -oE '[0-9]{4}-[0-9]{2}-[0-9]{2}' | head -1)
+                    echo ""
+                    echo -e "${YELLOW}  From: ${LOG_AUTHOR:-unknown}  |  ${LOG_DATE:-unknown date}  |  ${LOG_FILE}${NC}"
+                    echo -e "${YELLOW}------------------------------------------------------------${NC}"
+                    echo "$NOTE_CONTENT"
+                fi
+            fi
+        done
+        if [ "$NOTES_FOUND" -gt 0 ]; then
+            echo ""
+            echo -e "${YELLOW}============================================================${NC}"
+            echo -e "${YELLOW}  Address the above before continuing with other work.${NC}"
+            echo -e "${YELLOW}============================================================${NC}"
+            echo ""
+        fi
+    fi
+fi
+
+# Phase 6: Summary
 echo ""
 echo "=== Sync Summary ==="
 
 if [ "$INCOMING_COUNT" -gt 0 ]; then
-    # Count commits by author
     INCOMING_AUTHORS=$(git log --format='%an' $LOCAL_BEFORE..HEAD 2>/dev/null | sort | uniq -c | sort -rn | awk '{printf "%s (%s), ", substr($0, index($0,$2)), $1}' | sed 's/, $//')
     echo -e "${CYAN}Pulled in:${NC} $INCOMING_COUNT commit(s) — authors: ${INCOMING_AUTHORS:-unknown}"
 fi